Draw many vertices and edges cause cpu reduce FPS

[sonphambk]

Hi @koide3
I have a problem when load many vertices in your tools.
When openGL draws amount of large vertices and edges ( > 1000). The FPS will down.
Do you know where is problem in draw function ?

[zhangrenfan]

同样的程序，换到比较新的电脑就会出现fps降低卡顿现象，我也遇到这样的问题，后期通过在电脑的BIOS中，关于显卡的设置，从混合模式换为独显解决的（已经装过了英伟达驱动）